Exam 10: Four Wheel Alignment Part 2 Diagnostic Angles and Frame Damage

What is the most common cause of frame sagging?

Technician A says if the front wheels have a toe-out condition, the distance between the front edges of the tires is greater than the distance between the rear edges of the tires. Technician B says many front-wheel drive cars have a slight toe-out setting because driving forces tend to move the front wheels to a toe-in position. Who is correct?

All of these statements about SAI angle are true EXCEPT:

What is the necessary wheel position to provide proper tracking?

Section modulus is the measure of a frame's strength based on the types of material in the frame.

How do you obtain the included angle on a vehicle with negative camber?

Included angle is the sum of the SAI and the camber angle if the camber is negative.

To provide correct wheelbase, what is the necessary axle position?

What effect does negative scrub radius have on a vehicle when driven?

Technician A says the pointers on a tram gauge are not adjustable. Technician B says the tram gauge should be level when it is placed across the frame at specific locations. Who is correct?

Technician A says when setback occurs, one side of the front suspension is moved rearward in relation to the opposite side of the front suspension. Technician B says when setback occurs, one side of the front suspension may be at a 95 degree angle to the vehicle geometric centerline. Who is correct?

Proper directional stability is provided by proper frame condition in combination with accurate front and rear wheel position.

If the SAI angle is 12 degrees, and the camber is 1 degree +, the included angle is:

A vehicle exhibits excessive tire squeal during cornering. Technician A says that there may be an incorrect toe-out-on-turns angle. Technician B says that a steering arm may be bent. Who is correct?

Technician A says a torque box is positioned in front of the rear frame kickup side rails in a perimeter-type frame. Technician B says a torque box is positioned just ahead of the transmission support member in a perimeter-type frame. Who is correct?

Turning radius is adjustable on some vehicles.

Frame twist may be the result of a rollover accident or driving on rough terrain.

The perimeter-type frame is used when heavy load-carrying capacity is needed.

Technician A says a diamond-shaped frame may be caused by towing another vehicle with the chain attached to one corner of the frame. Technician B says a diamond-shaped frame may be caused when the vehicle is involved in a fire. Who is correct?

Technician A says the centerline of the front and rear suspensions must be on the vehicle centerline to provide correct vehicle tracking. Technician B says the distance crosswise between the front and rear wheels must be the same to provide correct vehicle tracking. Who is correct?